Java/SWT JFace Eclipse/Shell Display

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Child Shell Example

// java -Djava.library.path=D:\Java_Dev\eclipse\plugins\org.eclipse.swt.win32_3.0.0\os\win32\x86.library.path=D:\Java_Dev\eclipse\plugins\org.eclipse.swt.win32_3.0.0\os\win32\x86 ClassName
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ChildShellExample {
  Display d = new Display();
  ChildShellExample() {
    Shell s = new Shell(d);
    s.setSize(500, 500);
    s.open();
    ChildShell cs = new ChildShell(s);
    while (!s.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
    public static void main(String[] args){
      new ChildShellExample();
    }   
}
class ChildShell {
  ChildShell(Shell parent) {
    Shell child = new Shell(parent);
    child.setSize(200, 200);
    child.open();
  }
}





Child Shell Example 2

// java -Djava.library.path=D:\Java_Dev\eclipse\plugins\org.eclipse.swt.win32_3.0.0\os\win32\x86.library.path=D:\Java_Dev\eclipse\plugins\org.eclipse.swt.win32_3.0.0\os\win32\x86 ClassName
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ChildShellExample2 {
  Display d = new Display();
  ChildShellExample2() {
    Shell s = new Shell(d);
    s.setSize(500, 500);
    s.open();
    ChildShell cs1 = new ChildShell(s);
    ChildShell cs2 = new ChildShell(s);
    ChildShell cs3 = new ChildShell(s);
    while (!s.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
    public static void main(String[] argv){
      new ChildShellExample2();
    }  
}
class ChildShell {
  ChildShell(Shell parent) {
    Shell child = new Shell(parent);
    child.setSize(200, 200);
    child.open();
  }
}





Child Shell Example 3

// java -Djava.library.path=D:\Java_Dev\eclipse\plugins\org.eclipse.swt.win32_3.0.0\os\win32\x86.library.path=D:\Java_Dev\eclipse\plugins\org.eclipse.swt.win32_3.0.0\os\win32\x86 ClassName

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ChildShellExample3 {
  Display d = new Display();
  ChildShellExample3() {
    Shell s = new Shell(d);
    s.setSize(500, 500);
    s.open();
    ChildShell cs1 = new ChildShell(s);
    System.out.println("Execution Continues");
    while (!s.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
  public static void main(String[] argv) {
    new ChildShellExample3();
  }
}
class ChildShell {
  ChildShell(Shell parent) {
    Shell child = new Shell(parent);
    child.setSize(200, 200);
    child.open();
  }
}





Complex Shell Example

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class ComplexShellExample {
  Display d;
  Shell s;
  ComplexShellExample() {
    d = new Display();
    s = new Shell(d);
    s.setSize(250, 275);
    
    s.setText("A Shell Composite Example");
    GridLayout gl = new GridLayout();
    gl.numColumns = 4;
    s.setLayout(gl);
    s.setLayout(gl);
    GridComposite gc = new GridComposite(s);
    GridData gd = new GridData(GridData.FILL_BOTH);
    gd.horizontalSpan = 4;
    gc.setLayoutData(gd);
    gd = new GridData();
    RowComposite rc = new RowComposite(s);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    rc.setLayoutData(gd);
    s.open();
    while (!s.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
  public static void main(String[] arg) {
    new ComplexShellExample();
  }
}
class RowComposite extends Composite {
  final Button okBtn;
  final Button cancelBtn;
  public RowComposite(Composite c) {
    super(c, SWT.NO_FOCUS);
    RowLayout rl = new RowLayout();
    rl.wrap = false;
    rl.pack = false;
    this.setLayout(rl);
    okBtn = new Button(this, SWT.BORDER | SWT.PUSH);
    okBtn.setText("OK");
    okBtn.setSize(30, 20);
    cancelBtn = new Button(this, SWT.BORDER | SWT.PUSH);
    cancelBtn.setText("Cancel");
    cancelBtn.setSize(30, 20);
    cancelBtn.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        System.out.println("Cancel was clicked");
      }
    });
  }
  public static void main(String[] arg) {
  }
}
class GridComposite extends Composite {
  public GridComposite(Composite c) {
    super(c, SWT.BORDER);
    GridLayout gl = new GridLayout();
    gl.numColumns = 3;
    this.setLayout(gl);
    final Label l1 = new Label(this, SWT.BORDER);
    l1.setText("Column One");
    final Label l2 = new Label(this, SWT.BORDER);
    l2.setText("Column Two");
    final Label l3 = new Label(this, SWT.BORDER);
    l3.setText("Column Three");
    final Text t1 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t2 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t3 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t4 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t5 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t6 = new Text(this, SWT.SINGLE | SWT.BORDER);
    GridData gd = new GridData();
    gd.horizontalAlignment = GridData.CENTER;
    l1.setLayoutData(gd);
    gd = new GridData();
    gd.horizontalAlignment = GridData.CENTER;
    l2.setLayoutData(gd);
    gd = new GridData();
    gd.horizontalAlignment = GridData.CENTER;
    l3.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t1.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t2.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t3.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t4.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t5.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t6.setLayoutData(gd);
  }
}





Composite Shell Example 2

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class CompositeShellExample2 {
  Display d;
  Shell s;
  CompositeShellExample2() {
    d = new Display();
    s = new Shell(d);
    GridLayout gl = new GridLayout();
    gl.numColumns = 4;
    s.setLayout(gl);
    s.setSize(250, 275);
    
    s.setText("A Shell Composite Example");
    s.setLayout(gl);
    GridComposite gc = new GridComposite(s);
    GridData gd = new GridData(GridData.FILL_BOTH);
    gd.horizontalSpan = 4;
    gc.setLayoutData(gd);
    gd = new GridData();
    Composite c1 = new Composite(s, SWT.NO_FOCUS);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    c1.setLayoutData(gd);
    Composite c2 = new Composite(s, SWT.NO_FOCUS);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    c2.setLayoutData(gd);
    Composite c = new Composite(s, SWT.NO_FOCUS);
    c.setLayout(new RowLayout());
    Button b1 = new Button(c, SWT.PUSH | SWT.BORDER);
    b1.setText("OK");
    Button b2 = new Button(c, SWT.PUSH | SWT.BORDER);
    b2.setText("Cancel");
    gd = new GridData(GridData.FILL_HORIZONTAL);
    c.setLayoutData(gd);
    s.open();
    while (!s.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
  public static void main(String[] arg) {
    new CompositeShellExample2();
  }
}
class GridComposite extends Composite {
  public GridComposite(Composite c) {
    super(c, SWT.BORDER);
    GridLayout gl = new GridLayout();
    gl.numColumns = 3;
    this.setLayout(gl);
    final Label l1 = new Label(this, SWT.BORDER);
    l1.setText("Column One");
    final Label l2 = new Label(this, SWT.BORDER);
    l2.setText("Column Two");
    final Label l3 = new Label(this, SWT.BORDER);
    l3.setText("Column Three");
    final Text t1 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t2 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t3 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t4 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t5 = new Text(this, SWT.SINGLE | SWT.BORDER);
    final Text t6 = new Text(this, SWT.SINGLE | SWT.BORDER);
    GridData gd = new GridData();
    gd.horizontalAlignment = GridData.CENTER;
    l1.setLayoutData(gd);
    gd = new GridData();
    gd.horizontalAlignment = GridData.CENTER;
    l2.setLayoutData(gd);
    gd = new GridData();
    gd.horizontalAlignment = GridData.CENTER;
    l3.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t1.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t2.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t3.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t4.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t5.setLayoutData(gd);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    t6.setLayoutData(gd);
  }
}





Create and dispose children of a composite

/*
 * Composite example snippet: create and dispose children of a composite
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
public class Snippet98 {
  static int pageNum = 0;
  static Composite pageComposite;
  public static void main(String args[]) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Push");
    pageComposite = new Composite(shell, SWT.NONE);
    pageComposite.setLayout(new GridLayout());
    pageComposite.setLayoutData(new GridData());
    button.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event event) {
        if ((pageComposite != null) && (!pageComposite.isDisposed())) {
          pageComposite.dispose();
        }
        pageComposite = new Composite(shell, SWT.NONE);
        pageComposite.setLayout(new GridLayout());
        pageComposite.setLayoutData(new GridData());
        if (pageNum++ % 2 == 0) {
          Table table = new Table(pageComposite, SWT.BORDER);
          table.setLayoutData(new GridData());
          for (int i = 0; i < 5; i++) {
            new TableItem(table, SWT.NONE).setText("table item "
                + i);
          }
        } else {
          new Button(pageComposite, SWT.RADIO).setText("radio");
        }
        shell.layout(true);
      }
    });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





Create a non-rectangular shell to simulate transparency

/*
 * Create a non-rectangular shell to simulate transparency
 * 
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet180 {
  public static void main(String[] args) {
    Display display = new Display();
    final Image image = display.getSystemImage(SWT.ICON_WARNING);
    // Shell must be created with style SWT.NO_TRIM
    final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP);
    shell.setBackground(display.getSystemColor(SWT.COLOR_RED));
    // define a region
    Region region = new Region();
    Rectangle pixel = new Rectangle(0, 0, 1, 1);
    for (int y = 0; y < 200; y += 2) {
      for (int x = 0; x < 200; x += 2) {
        pixel.x = x;
        pixel.y = y;
        region.add(pixel);
      }
    }
    // define the shape of the shell using setRegion
    shell.setRegion(region);
    Rectangle size = region.getBounds();
    shell.setSize(size.width, size.height);
    shell.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent e) {
        Rectangle bounds = image.getBounds();
        Point size = shell.getSize();
        e.gc.drawImage(image, 0, 0, bounds.width, bounds.height, 10,
            10, size.x - 20, size.y - 20);
      }
    });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    region.dispose();
    display.dispose();
  }
}





Create a splash screen in SWT

/*
 * Shell example snippet: create a splash screen
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;
public class Snippet104 {
  public static void main(String[] args) {
    final Display display = new Display();
    final int[] count = new int[] { 4 };
    final Image image = new Image(display, 300, 300);
    final Shell splash = new Shell(SWT.ON_TOP);
    final ProgressBar bar = new ProgressBar(splash, SWT.NONE);
    bar.setMaximum(count[0]);
    Label label = new Label(splash, SWT.NONE);
    label.setImage(image);
    FormLayout layout = new FormLayout();
    splash.setLayout(layout);
    FormData labelData = new FormData();
    labelData.right = new FormAttachment(100, 0);
    labelData.bottom = new FormAttachment(100, 0);
    label.setLayoutData(labelData);
    FormData progressData = new FormData();
    progressData.left = new FormAttachment(0, 5);
    progressData.right = new FormAttachment(100, -5);
    progressData.bottom = new FormAttachment(100, -5);
    bar.setLayoutData(progressData);
    splash.pack();
    Rectangle splashRect = splash.getBounds();
    Rectangle displayRect = display.getBounds();
    int x = (displayRect.width - splashRect.width) / 2;
    int y = (displayRect.height - splashRect.height) / 2;
    splash.setLocation(x, y);
    splash.open();
    display.asyncExec(new Runnable() {
      public void run() {
        Shell[] shells = new Shell[count[0]];
        for (int i = 0; i < count[0]; i++) {
          shells[i] = new Shell(display);
          shells[i].setSize(300, 300);
          shells[i].addListener(SWT.Close, new Listener() {
            public void handleEvent(Event e) {
              --count[0];
            }
          });
          bar.setSelection(i + 1);
          try {
            Thread.sleep(1000);
          } catch (Throwable e) {
          }
        }
        splash.close();
        image.dispose();
        for (int i = 0; i < count[0]; i++) {
          shells[i].open();
        }
      }
    });
    while (count[0] != 0) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





Create one repeating timer (every 500 ms)

/*
 * Display example snippet: create one repeating timer (every 500 ms)
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet16 {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    final int time = 500;
    Runnable timer = new Runnable() {
      public void run() {
        Point point = display.getCursorLocation();
        Rectangle rect = shell.getBounds();
        if (rect.contains(point)) {
          System.out.println("In");
        } else {
          System.out.println("Out");
        }
        display.timerExec(time, this);
      }
    };
    display.timerExec(time, timer);
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





Create two one shot timers (5000 ms, 2000 ms)

/*
 * Display example snippet: create two one shot timers (5000 ms, 2000 ms)
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet60 {
public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  shell.setSize (200, 200);
  shell.open ();
  display.timerExec (5000, new Runnable () {
    public void run () {
      System.out.println ("5000");
    }
  });
  display.timerExec (2000, new Runnable () {
    public void run () {
      System.out.println ("2000");
    }
  });
  while (!shell.isDisposed ()) {
    if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}
}





Display example snippet: get the bounds and client area of a display

/*
 * Display example snippet: get the bounds and client area of a display
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.widgets.Display;
public class Snippet42 {
  public static void main(String[] args) {
    Display display = new Display();
    System.out.println("BOUNDS=" + display.getBounds() + " CLIENT="
        + display.getClientArea());
    display.dispose();
  }
}





Display: stop a repeating timer when a button is pressed

/*
 * Display example snippet: stop a repeating timer when a button is pressed
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class Snippet68 {
  public static void main(String[] args) {
    final Display display = new Display();
    final Color red = display.getSystemColor(SWT.COLOR_RED);
    final Color blue = display.getSystemColor(SWT.COLOR_BLUE);
    Shell shell = new Shell(display);
    shell.setLayout(new RowLayout());
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Stop Timer");
    final Label label = new Label(shell, SWT.BORDER);
    label.setBackground(red);
    final int time = 500;
    final Runnable timer = new Runnable() {
      public void run() {
        if (label.isDisposed())
          return;
        Color color = label.getBackground().equals(red) ? blue : red;
        label.setBackground(color);
        display.timerExec(time, this);
      }
    };
    display.timerExec(time, timer);
    button.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event event) {
        display.timerExec(-1, timer);
      }
    });
    button.pack();
    label.setLayoutData(new RowData(button.getSize()));
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





HelloWorld Display

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 15, 2004 1:22:06 AM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.ru/swt
 *****************************************************************************/

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class HelloWorldDisplay {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    
    shell.setText("Hello, world!");
    
    shell.open();
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }
    display.dispose();
  }
}





Non Rectangular Window in SWT

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class NonRectangularClass {
  static int[] createCircle(int xOffset, int yOffset, int radius) {
    int[] circlePoints = new int[10 * radius];
    for (int loopIndex = 0; loopIndex < 2 * radius + 1; loopIndex++) {
      int xCurrent = loopIndex - radius;
      int yCurrent = (int) Math.sqrt(radius * radius - xCurrent
          * xCurrent);
      int doubleLoopIndex = 2 * loopIndex;
      circlePoints[doubleLoopIndex] = xCurrent + xOffset;
      circlePoints[doubleLoopIndex + 1] = yCurrent + yOffset;
      circlePoints[10 * radius - doubleLoopIndex - 2] = xCurrent
          + xOffset;
      circlePoints[10 * radius - doubleLoopIndex - 1] = -yCurrent
          + yOffset;
    }
    return circlePoints;
  }
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display, SWT.NO_TRIM);
    Region region = new Region();
    region.add(createCircle(50, 50, 50));
    region.subtract(createCircle(50, 50, 20));
    shell.setRegion(region);
    shell.setSize(region.getBounds().width, region.getBounds().height);
    shell.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Exit");
    button.setBounds(35, 6, 35, 20);
    button.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event event) {
        shell.close();
      }
    });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    region.dispose();
    display.dispose();
  }
}





Open a shell maximized (full screen)

/*
 * Shell example snippet: open a shell maximized (full screen)
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet28 {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setMaximized(true);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





Open a shell minimized (iconified)

/*
 * Shell example snippet: open a shell minimized (iconified)
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet27 {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setMinimized(true);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





Prevent a shell from closing (prompt the user)

/*
 * Shell example snippet: prevent a shell from closing (prompt the user)
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
public class Snippet99 {
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.addListener(SWT.Close, new Listener() {
      public void handleEvent(Event event) {
        int style = SWT.APPLICATION_MODAL | SWT.YES | SWT.NO;
        MessageBox messageBox = new MessageBox(shell, style);
        messageBox.setText("Information");
        messageBox.setMessage("Close the shell?");
        event.doit = messageBox.open() == SWT.YES;
      }
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





Professional Shell

import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.*;
public class ProfessionalShell {
    
     ProfessionalShell()    {
        Display d = new Display();
        Shell s = new Shell(d);
        s.setSize(500,500);
        s.setImage(new Image(d, "jexp.gif"));
        s.setText("A Shell Example");
        s.open();
        while(!s.isDisposed()){
            if(!d.readAndDispatch())
                d.sleep();
        }
        d.dispose();
    }
   public static void main(String[] argv) {
     new ProfessionalShell();
  }
     
}





Ring Shell

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 25, 2004 7:58:06 PM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.ru/swt
 *****************************************************************************/

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class RingShell {
  
  int[] createCircle(int radius, int centerX, int centerY) {
    int[] points = new int[360 * 2];
    for(int i=0; i<360; i++) {
      points[i*2] = centerX + (int)(radius * Math.cos(Math.toRadians(i)));
      points[i*2+1] = centerY + (int)(radius * Math.sin(Math.toRadians(i)));
    }
    return points;
  }
  
  Point originalPosition = null;
  public RingShell() {
    final Display display = new Display();
    final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP);
    shell.setBackground(display.getSystemColor(SWT.COLOR_DARK_MAGENTA));
    
    Region region = new Region();
    region.add(createCircle(100, 100, 100));
    region.subtract(createCircle(50, 100, 100));
    shell.setRegion(region);
    
    // Make the shell movable by using the mouse pointer. 
    shell.addMouseListener(new MouseListener() {
      public void mouseDoubleClick(MouseEvent e) {
        shell.dispose(); // Double click to dispose the shell.
      }
      public void mouseDown(MouseEvent e) {
        originalPosition = new Point(e.x, e.y);
      }
      public void mouseUp(MouseEvent e) {
        originalPosition = null;
      }
    });
    
    shell.addMouseMoveListener(new MouseMoveListener() {
      public void mouseMove(MouseEvent e) {
        if(originalPosition == null)
          return;
        Point point = display.map(shell, null, e.x, e.y);
        shell.setLocation(point.x - originalPosition.x, point.y - originalPosition.y);
        System.out.println("Moved from: " + originalPosition + " to " + point);
      }
    });
    
    Rectangle regionBounds = region.getBounds();
    shell.setSize(regionBounds.width, regionBounds.height);
    shell.open();
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }
    display.dispose();
    region.dispose();
  }
  
  public static void main(String[] args) {
    new RingShell();
  }
}





Shell Style

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 25, 2004 4:28:59 PM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.ru/swt
 *****************************************************************************/

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ShellTrim {
  Display display = new Display();
  Shell shell = new Shell(display, SWT.SHELL_TRIM | SWT.TOOL);
  //Shell shell = new Shell(display, SWT.NO_TRIM);
  // Shell shell = new Shell(display, SWT.MAX);
  public ShellTrim() {
    init();
    
    shell.setText("Style: SHELL_TRIM | TOOL");
    shell.pack();
    shell.open();
    
    Shell shell2 = new Shell();
    shell2.pack();
    shell2.open();
    //textUser.forceFocus();
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }
    display.dispose();
  }
  private void init() {
  }
  public static void main(String[] args) {
    new ShellTrim();
  }
}





Shell Styles Example

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ShellStylesExample {
  ShellStylesExample() {
    Display d = new Display();
    Shell s = new Shell(d, SWT.CLOSE | SWT.RESIZE);
    s.setSize(300, 300);
    s.open();
    while (!s.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
  public static void main() {
    new ShellStylesExample();
  }
}





Shows the various styles of Decorations

//Send questions, comments, bug reports, etc. to the authors:
//Rob Warner (rwarner@interspatial.ru)
//Robert Harris (rbrt_harris@yahoo.ru)
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
/**
 * This application shows the various styles of Decorations
 */
public class DecorationsExample {
  /**
   * Runs the application
   */
  public void run() {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Decorations Example");
    createContents(shell);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
  /**
   * Creates the various Decorations
   * 
   * @param composite the parent composite
   */
  public void createContents(Composite composite) {
    // There are nine distinct styles, so create
    // a 3x3 grid
    composite.setLayout(new GridLayout(3, true));
    // The SWT.BORDER style
    Decorations d = new Decorations(composite, SWT.BORDER);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.BORDER");
    // The SWT.CLOSE style
    d = new Decorations(composite, SWT.CLOSE);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.CLOSE");
    // The SWT.MIN style
    d = new Decorations(composite, SWT.MIN);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.MIN");
    // The SWT.MAX style
    d = new Decorations(composite, SWT.MAX);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.MAX");
    // The SWT.NO_TRIM style
    d = new Decorations(composite, SWT.NO_TRIM);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.NO_TRIM");
    // The SWT.RESIZE style
    d = new Decorations(composite, SWT.RESIZE);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.RESIZE");
    // The SWT.TITLE style
    d = new Decorations(composite, SWT.TITLE);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.TITLE");
    // The SWT.ON_TOP style
    d = new Decorations(composite, SWT.ON_TOP);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.ON_TOP");
    // The SWT.TOOL style
    d = new Decorations(composite, SWT.TOOL);
    d.setLayoutData(new GridData(GridData.FILL_BOTH));
    d.setLayout(new FillLayout());
    new Label(d, SWT.CENTER).setText("SWT.TOOL");
  }
  /**
   * The entry point for the application
   * 
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    new DecorationsExample().run();
  }
}





Simplest SWT

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class HelloSWT {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("My First SWT GUI");
    shell.setSize(200, 100);
    Text helloText = new Text(shell, SWT.CENTER);
    helloText.setText("Hello SWT!");
    helloText.setBounds(47, 20, 100, 20);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





SWT Composite Class

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
public class CompositeClass {
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setSize(300, 300);
    shell.setLayout(new RowLayout());
    shell.setText("Composite Example");
    final Composite composite = new Composite(shell, SWT.NONE);
    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 4;
    composite.setLayout(gridLayout);
    for (int loopIndex = 0; loopIndex < 28; loopIndex++) {
      Label label = new Label(composite, SWT.SHADOW_NONE);
      label.setText("Label " + loopIndex);
    }
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}





SWT Shell : create a non-rectangular window

/*
 * Shell example snippet: create a non-rectangular window
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class Snippet134 {
  static int[] circle(int r, int offsetX, int offsetY) {
    int[] polygon = new int[8 * r + 4];
    // x^2 + y^2 = r^2
    for (int i = 0; i < 2 * r + 1; i++) {
      int x = i - r;
      int y = (int) Math.sqrt(r * r - x * x);
      polygon[2 * i] = offsetX + x;
      polygon[2 * i + 1] = offsetY + y;
      polygon[8 * r - 2 * i - 2] = offsetX + x;
      polygon[8 * r - 2 * i - 1] = offsetY - y;
    }
    return polygon;
  }
  public static void main(String[] args) {
    final Display display = new Display();
    // Shell must be created with style SWT.NO_TRIM
    final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP);
    shell.setBackground(display.getSystemColor(SWT.COLOR_RED));
    // define a region that looks like a key hole
    Region region = new Region();
    region.add(circle(67, 67, 67));
    region.subtract(circle(20, 67, 50));
    region.subtract(new int[] { 67, 50, 55, 105, 79, 105 });
    // define the shape of the shell using setRegion
    shell.setRegion(region);
    Rectangle size = region.getBounds();
    shell.setSize(size.width, size.height);
    // add ability to move shell around
    Listener l = new Listener() {
      Point origin;
      public void handleEvent(Event e) {
        switch (e.type) {
        case SWT.MouseDown:
          origin = new Point(e.x, e.y);
          break;
        case SWT.MouseUp:
          origin = null;
          break;
        case SWT.MouseMove:
          if (origin != null) {
            Point p = display.map(shell, null, e.x, e.y);
            shell.setLocation(p.x - origin.x, p.y - origin.y);
          }
          break;
        }
      }
    };
    shell.addListener(SWT.MouseDown, l);
    shell.addListener(SWT.MouseUp, l);
    shell.addListener(SWT.MouseMove, l);
    // add ability to close shell
    Button b = new Button(shell, SWT.PUSH);
    b.setBackground(shell.getBackground());
    b.setText("close");
    b.pack();
    b.setLocation(10, 68);
    b.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        shell.close();
      }
    });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    region.dispose();
    display.dispose();
  }
}





Widget Test

/*******************************************************************************
 * Copyright (c) 2004 Berthold Daum. All rights reserved. This program and the
 * accompanying materials are made available under the terms of the Common
 * Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors: Berthold Daum
 ******************************************************************************/
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class widgetTest {
  public static void main(String[] args) {
    // Create Display instance
    final Display display = new Display();
    // Create top level Shell (pass display as parent)
    final Shell toplevelShell = new Shell(display);
    // Set title line
    toplevelShell.setText("TopLevel.Titelzeile");
    // Display shell
    toplevelShell.open();
    // Create a dialog shell (pass toplevelShell as parent)
    final Shell dialogShell = new Shell(toplevelShell);
    // Set title line
    dialogShell.setText("Dialog.Titelzeile");
    // Display shell
    dialogShell.open();
    // Wait until top level shell is closed
    while (!toplevelShell.isDisposed()) {
      // Check for waiting events
      if (!display.readAndDispatch())
        display.sleep();
    }
  }
}


Источник — «http://jexp.ru/index.php?title=Java/SWT_JFace_Eclipse/Shell_Display&oldid=5638»